Stickers are illustrations or animations of characters that you can send to friends. They’re a great way to share how you’re feeling and add personality to your chats.
1. To send a sticker, go to the messages in Facebook
2. Click on a friend who you want to send the message to
3. In the chat dialog box there is a little smiley face in the top right hand corner – click this
4. You will then be presented with a list of available ‘stickers’ to send. If you want to add more, click on the ‘+’ symbol to go to the sticker store. Otherwise click on the sticker you want to send and it will then show up in the message box. Just click send
Read the full official Facebook help article here || Facebook